Dump-dcor-operating mechanism



H. S. HART. DUMP 000R OPERATING MECHANISM APFLICATION FILED OCT. 21.1918.

3 SHEETSSHEET I.

Pafanted Feb. 15, 1921.

H. S. HART. DUMP DOOR OPERATING MECHANISM. APPLICATION FILED OCT. 21,1918- I 15 720, Patented Feb. 15,1921.

3 SHEETSSHEET 3.

'ticularly pointed out in the PATENT @FFEQE...

HARRY S. HART, OF CHICAGO, ILLINOIS.

DUMP-DOOR-OPERATING MECHANISM.

Application filed October 21, 1918.

T 0 all whom it may concern Be it known that 1, Hanna S. HART, a citizenof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inDump-Door-Operating Mechanism, of which the following is aspecification.

This invention relates to operating mechanism for dump car doors. 7'

The object of this invention is to simplify and improve operatingmechanism for dump car doors in a manner to meet the requirements forsuccessful commercial operation. V

The invention is illustrated on the ac companying sheet of drawings, inwhich- Figure 1 is a fragmentary side elevation of a dump car embodyingmy invention;

Fig. 2 is a transverse sectional view taken in the plane of line 2-2 ofFig.1; and,

Fig. 8 is a transverse sectional view taken in the plane of line 33 ofFig. 1.

The various novel features of my inven tion will be apparent from thefollowing description and drawings and will be parappended claims. i

Referring-to the figures of the drawings, it will be noted that I haveshown a dump car, the body of which includes sides 10, ends 11, and afloor 12, which in this particular instance includes stationary A-shaped portions 13 at the ends of the car over the trucks which includewheels 14. These A-shape'd portions include downwardly and outwardlysloping members 15 which extend from'the center of the car over thecenter sill 16 toward the sides of the car. Intermediate the ends of thecar,

or intermediate the trucks, the floor includes stationary slopingmembers 17 which extend downwardly and inwardly from the sides of thecar toward the center thereof, the lower edges of the member 17terminating in longitudinal planes, including the truck wheels 14.

To normally close the dumping openings between the sides 10 ofjthe carand the lower edges of the A-shaped portion 13, I have providedvertically swinging dump doors 18, which preferably are horizontallypivotally connected along the lower edges of the-sides 10 of the car;These doors 18 preferably are angular in 'shape,'the upper portionsthereof normally extending in a Specification of Letters Patent.

Patented Feb. 15, 1921.

Serial No. 258,990.

vprovided which extend downwardly and outwardly from the center sill 16of the lower edges of said sloping members 17. These dump doors 19 arepivotally connected at 20 011 a horizontal pivot connection, wherebysaid doors may swing vertically. These doors preferably are straightthroughout.

This invention has to do primarily with the operating mechanism forthese dump doors, the lower edges of which lie in different horizontalplanes. The door operating mechanism includes an operating shaft 21 ateach side of the car preferably running the full length thereof andbeing connected to a stationarypart of the car. As shown, the operatingshaft is mounted directly under the sloping floor portion 17intermediate the trucks and extends under the lower edges of the dumpdoors 18 over the trucks. The operating shaft 21 on each side of the caris effective for actuating the doors 18 and 19 during one operation or,in other words, simultaneously. The operating connection between theoperating shaft 21 and the dump doors 18 includes spaced arms 22 whichare rigidly fixed to the operating shaft 21, there being a pin 23extending between the outer ends of said arms. A link 24, one end ofwhich is pivotally connected to a bracket 25 secured to the lowerportion of the door 18, is pivotally connected to the arm 22 by a looseor sliding connection, including a slot 26 in the link 24 which slidablyreceives the pin 23 connecting the spaced arms 22. It will be noted thatthe link 24 is provided with a square looking notch 2?, which, when thedoor 18 is closed, as shown at the lefthand side of Fig. 2, receives theupper half of the operating shaft 21 for locking the side dump door 18in locked position. To unlock the door 18 and move it into an openposition, the shaft 21, as shown at the left-hand side of Fig. 2, isrotated in a counterclockwise direction, which causes the arm 22 rigidlyconnected therewith to move closed position.

the, door 18 will be moved outwardly as a result of an outward thrusttransmitted through the arms 22, which, when they .reach an outwardhorizontal limiting. "position, cause the door to be completely opened,as shown at the right-hand side of Fig. 2. In closing he door the shaftis moved in an opposite direction, which causes the link 24 to be drawninwardly, tightly pressing the loweredge of the door 18 in engagementwith the lower edge'of the sloping portions 15 of the; A-shaped floor toform a positive seal against leaks, the last portion of the rotatingmovement of the shaft causing the link 2% to move into a lockingrelationship with respect to the operating shaft for locking the door inBy referring to Fig. 8, it will be noted that the operating connectionbetween the operating shaft 21 and its associated inter mediate dumpdoors 19 includes spaced arms 28 rigidly connected to the operatingshaft 21 and being connected at their outer ends by a pin 29, whichisreceived in a slot 30 in one end of the relatively long link 31, whichconnects the arms 28 with the lower edges ofthe dump doors 19. Each ofthe links 31 intermediate its length is provided with a locking notch 32which, when the door is in closed position, hooks over the shaft 21 forlocking the dump doors 19 in locked position. The leftrhand dump door ordoors in Fig.3 are in such lockedv position. To unlock said doors andopen the same, the operating shaft shown at the leftdiand side in Fig 3,is moved in a countercloclnvise direction, which first causes thenotched portion of the link 31 to disengage the shaft 21, the link 31being moved about its lower end as a pivot. As soon as the notch ismoved out of operating association with the shaft,

the dump doors 19 are swung into anbpen position as a result ofthe loadin the car. Assuming, however that there is no load being dumped, thedump doors 19 will be positively opened by the inward thrust transmittedthereto by the arm 28, the doors 19 finally assuming an open position,as shown at the right-hand side of Fig. 3, in which case the arms 28 andlinks 31 lie. substantially in the same plane. To close the dump doors19 the shaft is moved in the opposite direction, whereupon the doors areswung outwardly until their lower edges make a tight sealing jointwiththe lower edges of the'fioor members 17, the last portion of. therotative movement of the operating shaft causing the locking notch ofthe links 31 to closed position.

It will be understood that when the operating shaft on either side ofthe car is actuated, the doors over the trucks and intermediate thetrucks are simultaneously actuated.

It is my intention to cover all modifications of'the invention fallingwithin the spirit and scope of the following claims.

I claim:

1. In a dump car, the combination of a plurality of normally inclinedvertically swinging dump doors over and between the trucks, an"operating shaft. mounted on a stationary part of the caratthe sidethereof, armsrigidly connected'to said shaft, and links connecting saidarms withsaid doors whereby the latter may be operated.

2. In a dump car, the combination of a plurality of normally inclinedvertically swinging dump doors over andbetween the trucks, an operatingshaft mounted on a stationary part of the car at the side. thereof, armsrigidly connected to'said shaft, and links connecting said arms withsaid doors whereby the latter may be operated and the locking conditionof said doors changed. l

3. In a dump car, the combinatiouof a plurality of. normally inclinedvertically swinging dump doors over and between the trucks, an operatingshaft mounted on a stationary part of the car at the side thereof, armsrigidly connected to said shaft. and links connecting the. arms withsaid doors whereby the latter may be moved into d. In a dump 'car, thecombination of a plurality of normally inclinedfvertically swingingdump, doors over and-between the trucks, an operating shaft mounted on astationarypart of the carat the side there of,'arms rigidly connected tosaid shaft.

andlinks connecting the arms with said doors wherebythe latter may bemoved into closed position, said links having. portions cotiperatingwith said shaft for" locking the doorsinclosed position. 4 Y

5.111 a dump car, the combination of pivotally mounted dump doors, thedoors .over the trucks extending downwardly and inwardly and the doorsintermediate the.

trucks extending downwardly and". outwardly, an operating shaft for saiddoors, and operating connectionsincluding. rigid links betweensaidishaft andsaid doors for actuating the latter.

6. In a dump: car, the combination of pivotally' mounted dump doors, thedoors over the trucks extending downwardly and inwardly and the doorsintermediate the trucks extending downwardly and outwardly, an operatingshaft for said d0ors,*and opcrating connections including rigid 1 linksbetween said shaft and said doors for actuating the latter and forchanging their locking condition.

In a dump car, the combination'of a plurality of vertically swingingdump doors, those over the trucks extending downwardly and inwardly andthose intermediate the trucks extending downwardly and outwardly, anoperating shaft, and operating connections between said shaft and saiddoors including rigid links whereby said doors may be actuated, saidlinks having locking portions which cooperate with said operating shaftfor locking said doors in closed position.

8. In a dump car, the combination of a plurality of vertically swingingdoors, the

doors over the trucks extending downwardly and inwardly and the doorsbetween the trucks extending downwardly wardly, said doors having theirswinging edges in different horizontal planes, an op-.

edges in different horizontal planes, an op-' erating shaft, andconnections between said operating shaft and the lower edges of saiddoors for moving the swinging edges of said doors into closed positionand for locking the said doors in closed position.

10. In a dump car, the comblnation of a normally inclined verticallyswinging dump I door over a truck, an operating shaft mounted on astationary part of the car inwardly from 'a side thereof, an arm rigidlyconnected to the shaft, and a link connecting the arm and door wherebythe latter maybe operated.

11. In a dump car, the combination of a normally inclined swinging dumpdoor over and out- I a truck, an operating shaft mounted on a stationarypart of the car, an arm rigidly connected to said shaft, and a linkconnection between said arm and door whereby the latter may be operated.

12. In a dump car, the combination of a normally inclined swinging dumpdoor over a truck, an operating shaft mounted on a stationary part ofthe car, an arm rigidly connected to said shaft, and a linkconnectionbetween said arm and door whereby the latter may be operated,said link having a locking portion for engaging the shaft to lock thedoor in a given position.

13. A car of the class described having sides and ends, the floor overthe trucks comprising portions sloping downwardly and outwardly towardthe sides of the car, outwardly swinging doors pivoted to the sides ofthe car cooperating with said stationary floor portions, the floorbetween the trucks comprising downwardly and inwardly extendingstationary portions, downwardly and inwardly swinging doors pivoted ator near the center sill, cooperating with said downwardly and inwardlyextending floor portions, an operating shaft, and con nections fromsaidoperating shaftto the downwardly and inwardly swinging doors forsimultaneously operating the doors.

14:. A car of the class described having sides and ends, the stationaryfloor portion over thetrucks arranged to discharge the load downwardlyand outwardly, the stationary floor portions between the trucks adaptedto discharge the load downwardly and inwardly, downwardly swinging doorscooperating *ith said first named floor portions and inwardly swingingdoors cooper atin g with the last named floor portions, and operatingmechanism for simultaneously operating the downwardly and inwardlyswinging doors.

, Signed at Chicago, Illinois, this 18th day of October, 1918.

HARRY S. HART.

